Pacemaker Learning Package
Intensive Care: Learning Packages Intensive Care Unit Pacemaker Learning Package
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Intensive Care: Learning Packages Intensive Care Unit Pacemaker Learning Package LH_ICU2016_Learning_Package_Pacemaker_Learning_Package 34 | P a g e OUTPUT OUTPUT Is the electrical stimulus that the pacemaker box generates to pace the myocardium. Intended to trigger a depolarization in the chamber of the heart being paced May also refer to the voltage, amperage and/or pulse width measurement or settings of a particular pacing stimulus. Once the pacemaker has been programmed, we must tell it how much energy to use so a pacing stimulus is delivered. Many variables can affect the amount of energy necessary to pace the heart such as the type of electrodes, scar tissue and electrolyte disturbances. We need to determine the amount of energy that assures the pacemaker stimulates the heart to depolarize. Liverpool Hospital Intensive Care: Learning Packages Intensive Care Unit Pacemaker Learning Package LH_ICU2016_Learning_Package_Pacemaker_Learning_Package 35 | P a g e THRESHOLDS OUTPUT THRESHOLDS The output threshold is the minimum amount of energy required to “capture” the heart. To find output threshold If the patient is not being paced, then increase the pacemaker rate to 10 above the patient’s rate If the patient is already in a paced rhythm, turn the pacemaker rate down and observe the ECG monitor for the patients intrinsic heart rhythm. If the patient is still pacing at a rate of 60, abort the checking of the output threshold Explain to the patient that they may briefly become ‘light-headed’ during the checking procedure. Obtain a rhythm strip. Decrease the output setting until loss of capture occurs. Increase the output setting until you just see that capturing is occurring. This is called the stimulation Threshold. It is usually measured in milliamps (MA) for temporary pacemakers and volts (V) for permanent pacemakers You then set the output at double the threshold and add one as a safety margin tải về 1.43 Mb. Chia sẻ với bạn bè của bạn:
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